You can enter Unicode characters using both decimal and hexadecimal codes in different ways, depending on the platform or application:
Using Decimal Codes
- Windows (Alt Code Method):
   
- Hold down the Alt key (in Windows).
 - Type the decimal code on the NUMERIC keypad (e.g., Alt+65 for "A")
 
 - HTML Entities:
	
- Use followed by the decimal code and a semicolon.
 - Example: A displays "A".
 
 
Using Hexadecimal Codes:
- HTML Entities:
   
- Use followed by the hexadecimal code and a semicolon.
 - Example: A displays "A".
 - Example: 🎵 displays "🎵".
 - Example: 🪈 displays "⏿".
 
 - Programming:
	
- In languages like Python: \u0041 or \U00000041.